Definitely will stay. But muscle memory needs to be retrained.
In my standard position, I'm holding the mouse with my right hand and my left hand fingers are at around the ASDF keys. I can easily reach R E D keys with my left fingers and Reddit will be autofilled by the browser bar. But with Lemmy, I would have to take my right hand off of my mouse and type at least the L (and then E with left hand) for the autofill to fill in the rest.
This is something to keep in mind when naming things if I were to start a new company or product ;-) e.g. how ergonomic is the name.
If would be better if Lemmy was called Remmy, for example. Of course I can do something about it, like add a short cut somewhere in my browser.